117171domain: NAppears in sequencesConcatenate (1,n,n,1).at n=17A100846Number of inequivalent (mod D_4) ways to place 2 nonattacking knights on an n X n board.at n=35A243717Expansion of Product_{k>=1} 1/((1 - x^k) * (1 - x^(2*k)) * (1 - x^(3*k))).at n=30A327042